Arbitrarily little knowledge can give a quantum advantage for nonlocal tasks

Jonathan E Allcock, H Buhrman, Noah Linden

Research output: Contribution to journalArticle (Academic Journal)peer-review

1 Citation (Scopus)

Abstract

It has previously been shown that quantum nonlocality offers no benefit over classical correlations for performing a distributed task known as nonlocal computation. This is where separated parties must compute the value of a function without individually learning anything about the inputs. We show that giving the parties some knowledge of the inputs, however small, is sufficient to “unlock” the power of quantum mechanics to outperform classical mechanics. This role of information held locally gives insight into the general question of when quantum nonlocality gives an advantage over classical physics. Our results also reveal an interesting feature of the nonlocality embodied in the celebrated task of Clauser, Horne, Shimony, and Holt.

Translated title of the contributionArbitrarily little knowledge can give a quantum advantage for nonlocal tasks
Original languageEnglish
Article number032105
Number of pages5
JournalPhysical Review A: Atomic, Molecular and Optical Physics
Volume80
Issue number3
DOIs
Publication statusPublished - Sep 2009

Bibliographical note

Publisher: IMS

Fingerprint Dive into the research topics of 'Arbitrarily little knowledge can give a quantum advantage for nonlocal tasks'. Together they form a unique fingerprint.

Cite this